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1 # OF TESTS WITHOUT FAILURE 7 BASIC QUALITY TOOLS (PROPOSED BY KAORU ISHIKAWA) vs. RELIABILITY & CONFIDENCE CONFIDENCE LEVEL PERCENT ( ) P ALSO CALLED 7 QC TOOLS OR 7 OLD TOOLS R 1. CAUSE & EFFECT DIAGRAM 50% 60% 80% 90% 95% 99% 99.9% identifies many possible causes for an effect or problem 0.999 693 916 1609 2302 2995 4603 6905 and sorts ideas into useful categories 0.995 139 183 322 460 598 919 1379 2. CHECK SHEET 0.99 69 92 161 230 299 459 688 structured, prepared form for collecting and analyzing 0.98 35 46 80 114 149 228 342 data; a generic tool. 0.97 23 31 53 76 99 152 227 3. CONTROL CHART 0.96 17 23 40 57 74 113 170 graphs used to plot and monitor how a process 0.95 14 18 32 45 59 90 135 changes over time. 0.94 12 15 27 38 49 75 112 thequalityportal.com 0.93 10 13 23 32 42 64 96 4. HISTOGRAM graph showing frequency distribution or how often each 83 9 11 20 28 36 56 0.92 different value in a dataset occurs. 0.91 8 10 18 25 32 49 74 0.90 9 16 22 29 44 66 7 5. PARETO CHART shows on a bar graph which factors are more 8 11 14 21 5 0.80 4 31 significant. 35791320 0.70 2 2 0.60 6. SCATTER DIAGRAM 24561014 graphs pairs of numerical data, one variable on each 0.50 2345710 1 axis, to look for a relationship. thequalityportal.com formula: 7. STRATIFICATION # of tests = Log(1-Conf. Level) / Log(Reliability) If the required number of tests are completed without a separates data gathered from a variety of sources so failure, then one can say that the success rate is at least that patterns can be seen. R, with probability P compliments of - THEQUALITYPORTAL.COM compliments of - THEQUALITYPORTAL.COM 3K 3M 5M 5P 7P 3R 5S 7 NEW QUALITY TOOLS (FROM UNION OF JAPANESE SCIENTISTS & ENGINEERS) (3, 5, 7's OF QUALITY) SOME COMMON TERMS 7 MANAGEMENT & PLANNING TOOLS 1. AFFINITY DIAGRAM 3K kiken (dangerous), kitanai (dirty), kitsui (stressful) - organizes a large number of ideas into their natural general work place hazards relationships. 2. RELATIONSHIP DIAGRAM 3M muda (waste), mura (irregular, inconsistent) and muri helps analyze the link between different aspects of a (unreasonable strain) complex situation. thequalityportal.com 5M 3. TREE DIAGRAM breaks down broad categories in detail, helping move manpower, machine, method, material and step by step from generalities to specifics. measurement (sources of variation) thequalityportal.com 4. MATRIX DIAGRAM 5P shows the relationship between groups of information - plant, product, people, policies, procedures (sources of gives info about the relationship. variation - for fishbone) 5. MATRIX DATA ANALYSIS 7P mathematical technique for analyzing matrices, often proper prior planning prevents pitifully poor replaced in this list by prioritization matrix. performance 6. ARROW DIAGRAM 3R shows the required order of tasks in a project or recording, recalling, reconstructing (when generating new product ideas) process, the best schedule for the entire project. 7. PDP CHART 5S Process Decision Program Chart systematically seiri (sort), seiton (straighten), seiso (shine), seiketsu identifies what might go wrong in a plan. (standardize) and shitsuke (sustain) 7 WASTES over-production, delay, transport, over-processing, inventory, motion, making defective parts compliments of - THEQUALITYPORTAL.COM compliments of - THEQUALITYPORTAL.COM

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